package cn.vawn.medical.util;

import java.security.MessageDigest;

public class MD5Util {
	
	public static String getMD5(byte[] source) {
		String s = null;
		char hexDigits[] = {'0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f'};
		try {
			MessageDigest md = MessageDigest.getInstance("MD5");
			md.update(source);
			byte tmp[] = md.digest(); 
			char str[] = new char[16 * 2]; 
			int k = 0; 
			for (int i = 0; i < 16; i++) { 				
				byte byte0 = tmp[i]; 
				str[k++] = hexDigits[byte0 >>> 4 & 0xf]; 				
				str[k++] = hexDigits[byte0 & 0xf]; 
			}
			s = new String(str); 
		} catch (Exception e) {
			e.printStackTrace();
		}
		return s;
	}

}
